英语题there are five pairs to choose from ,but i am at a loss which to buy
问题描述:
英语题there are five pairs to choose from ,but i am at a loss which to buy
there are five pairs______,but i'm at a loss which to buy.
choose from
为什么不能选for choosing
答
to choose表示一个动作
for choosing表示状态
所以不能选
to do为不定式